{"id":"CVE-2026-116734","revision":"8c665281dcf34d27867fda15d58f35b6","records":[{"revision":"8c665281dcf34d27867fda15d58f35b6","observedAt":"2026-10-26T22:35:30.956+00:00","statement":{"source":"cve-program","id":"CVE-2026-116734","aliases":[],"title":"flatcc through 0.6.4 Out-of-Bounds Read via verifier check_header","description":"flatcc through 0.6.4 contains an integer overflow vulnerability in the check_header function of the FlatBuffers verifier because its overflow guard is dead code. On 32-bit builds, attackers can supply a crafted buffer offset that wraps the bounds check, causing an out-of-bounds read before the buffer and crashing the process.","state":0,"publishedAt":"2026-10-26T21:52:34.998+00:00","modifiedAt":"2026-10-26T21:52:34.998+00:00","affected":[{"ecosystem":"Vendor product","name":"flatcc","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"dvidelabs\",\n                    \"product\": \"flatcc\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\",\n                            \"lessThanOrEqual\": \"0.6.4\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:github/dvidelabs/flatcc\",\n                    \"repo\": \"https://github.com/dvidelabs/flatcc\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","score":6.3,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","score":3.7,"severity":"LOW"}],"references":["https://github.com/dvidelabs/flatcc/commit/0df9c097a19badc8bd22d93af8fd47bd291e5d9f","https://github.com/dvidelabs/flatcc","https://github.com/dvidelabs/flatcc/blob/v0.6.4/src/runtime/verifier.c#L126-L137","https://hackmd.io/@haindpwn/flatcc-json-number-oob-read","https://www.vulncheck.com/advisories/flatcc-through-0.6.4-out-of-bounds-read-via-verifier-check-header"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116734","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-116734","identifiers":["CVE-2026-116734"]},"retained":false,"historicalAffected":[]}],"coverage":[]}